Dispensing-pump.



L. E. BAKER.

DISPENSING PUMP.

APPLICATION man Muze. 19|5.

Patented Nov. 20,1917.

5 SHEETS-SHEET l.

m w W .lll v H n M ENTQR.

5 SHEETS-SHEET 2.

wanted Nov. 20, 1917.

L. E. BAKER.

ISFENSING PUMP.

APPLICATION FILED MAY 29. X515.`

A TTORNE Y uM/g] EN OR.

M W J L.' E. BAKER. DISPENSING PUMP.

APPLICATION FILED MAY 28, 1915. 1,247,203.

Patented Nov. 20, i917.

5 SHEETS-SHEET 4.

W I TNESSES f @Y @5M A TTORNE Y.

l.. E. BAKER.

DISPENSING PUMP.

1,247,4303. APPLICATION Hm W28' im. l Patnted Nov.` 20, 1917.

5 SHEETS-SHEET 5.

Y @A a E WITNEssEs.- l. l u w 2E l BY M Mai/WMV v ATTORNEY LINNAEUS E. Bamm,

UNITED .STATES PATENT OFFICE. `A orroni' Waarin, INDIE-seltenen TGWAYNE '011. ai l yPinar co., `a conroaATIoN or INnIANA.

To lllwhom t may concern:

Be it known that I, LINNEUS E. BAKER,

a V*citizen of theUnited States of.Ameri`ca, and resident of Fort Wayne, in the county of Allen and State of Indiana, have invented certain new and useful Improvements in is a specificatio f/f ,.1 This invention relatesgfto improvements 1n pumps for dispensing `oil and .other liquids, and the object thereof is to provide a crank operated pump with mechanism intervening.

between the crank and the pump-rod by means of which the latter will be reciprocated as the crank is turned continuously in one dlrection only, and a furtherob]ect 1s` to construct the intervening mechanism with gearing by means of which the ratio of movement between the crank and the pumprod will vary so that during the upward or discharge stroke of the pump the leverage of the crank in its operation'of the pump rodvthrough the gearing will be comparatively greater than when the pump-rod is moved in the opposite direction. By this construction the amount of physical energy required to operate the crank throughout the cycle of movement of the pump is more nearly uniform and a further advantage of therapid return of Athe pump plunger 1s attained after having made the discharge strokewhich'latter requires comparatively greater force. The idea of the 'invention is to .apply through the mechanism suflicient leverage in lifting the plunger during the suction and discharge stroke as to render the operation easy,v and to '4 eect ythe return stroke of the pump. plunger quickly and without the necessity pf reversing the movement of the operating crank. By means of the construction herein disclosed the complete operation of the pump is elected by turning the crank continuously in one direction atuniform velocity, the plunger being h- L- `of movement of the [desired stage.

'lifted `in its discharge stroke with comparatively gieater force while its return stroke is e'ected with comparatively greater velocity.

Another `:feature of the invention is the provision of vmechanism by means ,of whichy a or operating.` the pump-rod so as to effectfthereversal the gearing may be shifted pump plunger at any Dispensing-Pumps, ofI which the following' The objects of the invention are accomphshed by the construction illustrated` in the accompanying drawings in which:

Fi ure l the evice;

Specication of Letters Patent. q i Patgnted Nov, 20, 1.917. Application :nea May as. 1915. serial No. 30,578.

is a vertical central section of i Fig. 2 is an elevation of the device vin af i plane at right angles to Fig. l and with the pedestal shown in section;`

Fig. 3 is anenlarged `detail view ofthe driving head in the same plane as Fi 1;.l

Fig.` 4; is an enlarged detail view o the 4driving head in section on. theline -C of Fi 1- f Fig. 5 is ari-'enlarged detail .view of a part of the clutch shifting mechanism, in section on the line .D of Fig. 1-;,

Flg. 6 is' an enlarged detail view of thev clutch shiftlng mechanism, in section on the line f-F of Flg. 4;

Fig. is a detail view showing the clutch controlling vmechanism in its position when the back gear is used; f 4

Fig. 8 is a similar view of the same showing it in position when the direct gear-is used;

Fig. 9 is a plan view of theLa-pparatus showln'g a transverse section through the driving head on the line -E of Fig. l; and

Fig. 10l is a vertical central section through the top of the head of the pump cylinder. Similar numerals of reference indicate corresponding parts throughout the various views and' referring now to the-same:

f The `invention is comprisedr of a pump proper and a mechanism for actuating the pump, and also a stop mechanismfor regullating the actuating mechanism. The puma proper is comprised of a cylinder (l) having a chambered-head (2) at its top and a head (3) at its lower end containing an inlet valve `(4).

Within the cylinder is a et1 i reciprocating plunger (5) i having a valve (6) that admits of the passage ofliqu'pid through the plunger upon ythe return troke thereof. The valve `(4) is seated so that as'the plunger is raised liquid will be drawn into ,the llovver part ofthe cylinder through, "the pipe connection (7.) and-will be prevented IOID retracting by said valve during thefreturn stroke o said plun er. valve (6) inthe Vplunger is seate so as to allow the'liquid drawn into nthe lower part The of the cylinder to pass through the plunger durmg the return stroke of the plunger and to prevent retraction of the liquid in the upper part of the cylinder through they f of auze or perforated material, that are ati with the plun er 5) and which extendsup tac ed to removable plugs (12) vthat are 'screwed into the head (2) so that the screens extend into the chamber (8) -thereof. The discharge pipes (9) and (10) have screw threaded connection respectively .with the plugs (12) through which they communicate with the chamber (8), the screens serving to strain the liquid as it leaves the chamber and passes into the discharge pipes,

The pump has a pump-rod (13) connected through a stu .ngox (14) in the head The pump thus formed is supported `upon'a cylindrical pedestal (15 the outer marginal head ofthe pump resting upon the top of thepedestal and secured thereto bylmeans of cap-screws (16).

The mechanism for actuating the pump is supported upon the head (2) and consists of a standard (17) having a housing (18) atits upper end through which the pump-rod (13) extends, and a pipe (19) securedin the head (2) and that has communication at its lower end with the chamber (8) extends' up through a lug (20) that projects from the side `of the housing and affords' support for same. y A cap (21) closes the top of the pipe (19) so'as to prevent the discharge of fluid, the pipe serving as an expansion chamber as well as support for the housing.

A rack-bar (22) is fixed upon the pumprod and has near its lower end a horizontally projecting lug (23). A crank-shaft (24)V extends through the housing and has a crank (25) ixed'upon its outerwend for within the housing are loosely mounted two clutch-wheels (26) and' (27) the hubs 'of' which are toothed to form pinions (28) and (29) respectively. The pinion (28) engages inmesh with the rack-bar (22), and the pinion- 29) engages in mesh with 'a back gear (30) which is lixed upon a countershaft l(31), the latter extending in parallel relation With the crank-shaft (24) and being supported at its respective ends in the housing. Also xed upon the shaft (3l) is a pinion (32) that engages in mesh with the rack-bar (22). Fixed upon the crank-shaft (24), and intervening between the clutchwheels,(26) and (27) is a block (33)*upon which is mounted 'a ratchetwheel (34), the latter being adapted to be shifted longitudinally upon the block so that the teeth on one of its ends may engage the clut lhwlieel (27 or the teeth (36) upon Iits opposite end may engage the clutch-wheel (26) accordingly as the ratchet-wh V E) 'lis shifted rom one position to the other. l

annular groove (37) is'made in the ratchewheel into which extend pins (38) that project from a yoke (39) at the' end of its arms (40). The yoke is mounted loosely upon a shaft (41), the latterextending through its arms. Fixed upon the shaft (4 1), .adjacent the yoke (39) is an arm (42) having a counter-sunk opening (43) therein adapted to receive the pointed end of a plug (44) that is loosely mounted in the yoke and pressed by means of a spring (45) into contact with the arm (42), the spring being mounted in the yoke. The shaft (41) is adapted to be oscillated so that the yoke will be caused to shift theratchet-wheel into engaging relation with one or the other of the clutch? wheels (26) or (27 movement being ap# plied to the-yoke through the medium of the arm (42) and its engagement with the plu (44). Thepointed plug (44) bearing `in t e counter-sink in the arm (42) affords yielding connection between the arm and yoke so that the latter will move with the shaft (41) as it oscillates, and thus causing the ratchet-Wheel to be yieldingly pressed into engagement with the corresponding clutch-Wheel. Should the crank (25) be revolved in the opposite direction to its driving movement, the ratchet-Wheel will tend to drift from its connection with the clutchwheelwith which it is engaged because of theslant of its teeth and the yoke will ac- Acommodatingly swing upon the shaft (41), the plug' (44) being forced inwa'rdly against the pressure of the spring (45) to admit of the necessary play of the yoke upon the shaft. -As the pointed end of the plug tends to centerfin the counter-sink in the arm (42) the yoltr tends to hold the ratchet-wheelinto engagement with one or the other of the clutch-wheels according to the position of operating the same, and also upon said shaft, 4.thelarm (42). Thus, as the shaft (24) is `fo'tated, the ratchet-wheel, While pressed against-the faceof one or-the Iother of the clutch-wheels'bv the yoke so that the engaged cllteh-.fwheelywill be driven as the crank is ojerated in one direction, will be permitted to drift from its toothed enga ment/ with the clutch-wheel and rotate i ly 'when the movement of the crank-shaft reversed; It'is essential that the drift of' ltl'e teeth' on the respective ends of the ratchet-wheel is such thatthe clutch-Wheel hasft' engage 'and dri've the corresponding clutch-wheel when rotated normallyfin the .drivingdirection. By this constiuction -it the pinion will become rotated inthe oppo site direction, which being fixed upon the shaft (31), will cause the pinion (32), also back-gear (30) .fixed upon the same shaft,tolikew1se' revolve, causing the rackbar (22) meshing' therewith to movev upwardly. As the rackbar is moved the pump-rod andplunger connected therewith areac'cordin ly actuated.

When the ratchet-wheel 34) 4is' shifted into engagement with the clutch-wheel (26) the pinion (28) connected with the latter and engaged in mesh with the rackebar (22), upon rotation of the crank-shaft' drives the rack-bar downwardly, thus effecting the return stroke of theplunger. Vlt

will be noted that in 4the latter*action the return stroke is effected throughthejrotation of the`-I crank-shaft and(` ion 28) whichlatterf acts directly upon t e rackar, and it willlgfalso be noted that when the ratchet-wheel engages the clutch-wheel* (27),

the .rack -bar will be actuated upwardlyl through the medium` of the inion (29),

and -pinion (32)). 4 It is essential to shift the ratchetwheel from engagement with one clutch-wheel to the other, in vorder to eiect the reversal in the driven movement of the rack-bar without reversing the direction of the rotation lng crankin one direction only.

of thefcrank, it being the intention to operate the mechanism by revolving the operat In Vorder l"to leiiect the shifting of the ratchetwh'eel from engagement with ono clutch-wheel to' `.the other at the ends of the discharge return strokes of the ump, a mechanism is rovided consisting o. a vertically movable 'Ii rod (46), the' lower endof which extendsloosely into a lug (47) on the head (2), and

, 5.6 the upper end of which has fixed thereon a the housing and engaging a rack-bar (48 the latter extendineg through tooth segment 1 5 the' housing -in parallel relation with t e4 -r fthe rack-bar (48) is moved vertically the' An oscillating shaft (50) extends throw; h

V"haft.(41) and the segmentYgear-FMQ) is fined thereon so thatasthe rod (46) with shaft (50) ds 'accordingly oscillated. -Upon are rigidly fixed bifurcat'ed levers (51) and 52) respectively, shown in 3, 7 and 8.

j'lhe"innermost arm (53)- dit y `1li-as.al'aterally projecting block-(54) `upon its 'outer face, `and the =outer-arm (5 5 of the. lever (52) has a similar 'laterally projecting and the -inion 4 lever (51) block (56) upon its er face, the said blocks extending in a co ,on plane so that they may come into Contact with each other when the levers are' oscillated. The inner arm 4(57) of the lever; (52) is extended f r 7g wardly so as to serve as a handle for he purpose of manual manipulation, and the rear end of the inner arm '(53) of the lever (51) is providedwith extending feet (51B) contact, with the adjacent wall (59).of t e housing as the lever is shifted from one `:E its positions to the other and thus limit the range of movement of the lever.4 Each of that are adapted to alternately come mo 7'5 the levers (51) and (52) has a spud (60) 80 that extends through each of its arms in aallel relation with the corresponding shafts '(4:1) and (50), and a rod (61) 'extends through both spuds at points intervening between the arms of the levers. A 85 nut (62)-isfixed at the top of the rod that limits the relative downward movement of the rod by coming into contact with the adjacent Spud. A nut (63) fixedupon the rod '1s adapted to bear downwardly against the,

spud in the lever (51) when the rod 61). is accordingly pressed. A nut (64;) als'o xed-u on the ,rod (61) aiiords a Aseat for oneen of `a compression-spring. (65) that bears upwardly against the Spud (60) in 95 the leverl (52) and another nut v(66) fixed at the'lower end ofthe rod serves as a seat for the lower end of a compression spring that bears'upwardly against the spud is oscillated bythe vertical movement of the rod (a6) the lever (52) is accordingly swung.. upwardlyor downwardly."

When the lever 1s swung upwardly, the rod (61), because of the'eng'agement of the nut 2) thereon with 1.95`

the Spud (60) in, said lev` is drawnup# pressure of the sprinigbecausefduringthe 115. 4u ward movement o y the lever,7"(52), the b ook (54) carried by thelever V(51) becomesf` obstructed bythe b1ock"(`56) Ionthe4 lever (52) and itsupward swigingmovement is carried o'utfo .the path of the block (54) on j the other 'lever"f(asf'shownih Fig'. 7),' at i the outer ends of the shafts (41)-and (50) Thus. c e y 'driving'- m11-,-

tends-eto swin i gin' in the lever '(51). When the shaft (50) 1Q@V 'thereby-Prwntedmail the. lever (521;) hasta moved to a:l ojntwhere its block (56).V

@Perma-'positionn the ,Shea (4.1) @a 1251;

time 0f *he trank with Emerso@ mi reversed and its ratio of driving action reduced.

When the lever (52) is moved downwardly by the corresponding downward movement of the rod (46) the spring (65) becomes compressed against the nut (64), and the rod (61) therefore is so that the nut (63) acts to press the lever (51) downwardly. Durin the' downward movement of the lever (52 the block (54) carried by the lever (51) becomes obstructed by the block (56) of the lever (52), and

its downward swinging movement 1s thereby prevented until the lever (52) has moved tov a point where its block (56) is carried out of, the path of the block (54) on the other lever (as shown in Fig. 8) at which stage the lever (51) is pressed to its lowermost position and the shaft (41) accordingly oscillated with the effect that the ratchet-wheel (34) becomes shifted from the clutchwhecl (26) to engagement with the clutch-wheel (27). Thus'the driving relation of the crank with the 'lump-rod becomes reversed and its ratio ofdriving action iny creased. The rotation of the crank continuouslyI in one direction effects the continu ous/reciprocation ofthe pump with a high ratio of action between the crank and the 30. pump during the upward or discharge stroke thereof `and a comparatively lower ratio during the return stroke. l

As a means of automaticall effecting the shifting of the ratchet-wheel7 so as to re verse the action of the gearing at each end of the stroke of the pump, two stops (68) and (69) are secured respectively upon the rod (46) near its opposite ends so that the projectin lu (23) on the rack-bar will 1n- 40 t-ervene t ere etween and engage the stop (69) upon the upward stroke ofthe reckbar (22), causing the rod (46) to be moved upwardly; and engage the stop (68) l u on the downwardstrokeof the rackba'r (122) causin therod(46) to move downwardly. Thus 51e gearing hereinbefore described in train between the crank and the plumprod becomes reversed at each end of t estreke of the pump and with the accompanying alteration in the 4ratio of movement. The rod is fixed in parallel relation with the rod l( 46) and extends loosely through the stops (68) and (69) so as to serve as a y uldelfor the stops yand prevent the same 155l rom turnin out ofthe path of theprojectinglug on e rack.

he stops (68) a'nd' (6 9) are spiueedatv :such distance apart as to cause the reversal of the driving gear'at the respective 'ends of l 30 the stroke of the pump to confine the'v length lof the stroke of thepump to such extent that a predetermined definite* quantity of" liquid will be discharged upon cechi-complete cycle of the ur'r'1p 65 Asa means of equsmg the reversal'o'f the rod (46) pressed downwardly to the other. When the lever (52) l 1s-.move

gearing to take plae at other stages than at the complete strokes of the pum z so that fractional portions of the normal lschurge from the pump may be effected, a series of adjustable stops (71) are threaded upon the 70 and spaced apart 4thereon at suitable intervals accordingly las to the extent, of the movements of the pump'is desired. The stops (7l) are adapted to be -severally turned upon the rod (46) as the 'o erator 7.5- may desire into the path of the lug '23) on the rack-bar (22) so as to become -engaged thereby during the upward stroke of the pump with the effect that the ro'd (46) becomes lifted at correspondinglyf intermediate stages of the normal stroke of the pump. By properly spacing the stops (71) upon the rod, various definite redetermined quantities of liquid upon eacii cycle of the pump may be effected by shifting the stops accordingly into the path of the -e'nga'gin lug on the rack, the reversal being effected upon the engagement of the lug with the adjustable stop.

Adjustment is provided for' confiningl the' 90 swinging movement ofthe lever (52 to within its intended range, and the -ad]ust` ment is comprised of set-screws (72) that extend through the housing (18) so as to oo ntact respectively with the upper and lower faces of the segment gear (49) as the iatter 'i is raised or lowered; By adjusting the set screws the play of the ear (49) and the consequent movement of t e shaft (50), and lever (52) lixed thereon, is provided .for so that the block (56) carried by the lever (52) will becarried when the lever is in upper? most position clear of the path of the block (54) on the other lever, (as shown in Fig. 7) and when in its lowermostosition (as shown in Fig. 8) the block (56S willclear the path of the block (54) upon the oppas site side, in each instance permitting the as+ ,A sage of the block (54) as the lever to w ch l', it 1s fixed is moved from one of its positions downwardly pressure is exerted-f'upon the, lever (51) to move it downwardly. elem-hut the latter is detained by the interference of the blocks (56') and (5.4) until the-'former'lever has completed its-stroke. Upon the upward movement of the lever 1(52)" pressure is exerted upon. the leverV move it upwardly also, butjtheflatter 'def tained -because of the interference off blocks until the former levez" has completed'- l its stroke.A v Themovement of -theleverfx '51) has the effect;4 of shifting the rg'tchet.- l, from one clutch-wheel tothe otber the. driving relation f the-mank the pump-rod. is reversed. the ,(46) is'laised' by the 4'upward strokev of fthe pump-rodi, the segment gearf(49) comes into' i contact with'the upper set-screw(72) stolfp .ping the movement of v-the driving gear.' I y leo @medion (74) S0 that the faucet may be .a slight retracting movement applied to 'the operating crank sulleient slack is a'orded to allow the ratchetwheel to slip from its -connection from'the en aged clutch-wheel falso' be provided with n faucet (73), or the swung'V jaround other.' Qi',

ipesgmny he connected with the discharge e pump by means of a swivel head o from' one position to the forc'cmvenience1 one of the 4 dis- 'charge pipesmay be extended lo n suitable height above theapparatus und have a hose not shown) attached thereto for conveying e discharge of the pump to receptacles as Vinoy suit the convenience of the operator.

The chumbered head (2)4 has un upwardly extending inner wall (75) nud the opening-4 (76) atthe top of the wall for the admission 0f liquid from the cylinder intothe chamber. The chamber is so proportioned :is to contuin therein ,the .filter screens (1l). A pipe t(137). having cook (78)= extends through e head' and communicantes wi th the lower part ofthe'chambery und is intended for the lperiodi'cal discharge of sediment therefrom.

'What I-clain'i is 1. In apparatus of the class described, o reciprocating pump; n. ruck-'uur lixed upon the pump-rod thereof; n. standard in connection with the pump hnvinnj n 'gear nous mg a counter-shaft having u inch-geur und pinion fixed thereon, the piniony meshing 4with the rack-bnr; a crankshaft heiving u block fixed thereon and two pinions loosel3r mountedV thereon one upon euch side of the i, si

. to' selectively engage the 'clutch-whe reci rocetin block und engaged respectively in mesh with the rack-our und geur; n clutclnwheel in fixed relation with each of thc lutter pinions; n'1'atchet-wheel on the block odour-wl on oscillating yoke havin 4engagement wnii the rutchebwheel'or shiting the sume; ond u stop-mcchenisrn adapted to be enguged. and

-actuuted in oyriposite directions et the corresponding enosof the stroke of the meh-her and hcving also actuating; relation with the 2; In eppemtus or' the class described., e

pump having .a pumprod witl a rac-k zu fixed thereon; two pinions en ging-thc ruck; a. reversinlgn ige-ir rnechumsm avmg actuating relation with said piniolls dapted to actimto the 1fach in oppop #sitey directions through the n'iedium of seid.

pnihps alternatelygyami ineens adapted to mech mn in opposite directions as the 'reciprocating puni a. reversible gearingA4 pum. K l .,I 5. n. apparatus of the cles-s deserihed,

, with the stop mechnnsxn und the oscillating` pump is reciprocted and having'n.lsoaetii-.l ating relation 'with 'the geur mechanismo reverse the same.` l f .-ff i; 3. In mechanism of the class deseribed, a, y rcciprocetin' pump having a pump-M1479 if. with n. rackar fixed thereuponya reversiblo gearing having two pinions in driying.. :k relation with the rack-bur adapted tojcctuf i nte the sume in ,opposite directions through 4 the medium ntfsmd pinions alternately; i; "15 stop mechenlsl'n adapted to be engaged l actuated by the roek-bnr at the correspond.-v f ingends of. its stroke; andV menus in Acone",` nection with the stop eel'iunism ondigeen-l] ing for roversingthe. ttor, .so f

A 4. In apparatus oflthe 'clues descrihedtgfmconnection witht e pump to ectuetertlie suine; u stop mechansm;.1neens in-connerf'g; v tion'with the stop mechanism and gearing-:lss for reversn the latter as the stopzmeche i nism is shi 1ed; e'nd,meansiu oo nneeti'oh..` with the pumpadapte'dto engae and shift 'El the stop mechanism in opposite irections ct..,. the corresponding ends-ofthe stroke oil tlieiso` C 1 pump; c rack-burrfor actuating the puxnpxjl:

'o she-ft having n back-.gear and ,pinioniix thereon with the pinion :meshin with the-fao 1-x ruck-bor; o shaft having a cra. ettaoheygl thereto to operate vthe Vsaine `end. hoving. loosely mounted 'thereontwo pnions; on iuinesh' with the rack-ber and the otherl with the bn-clngear; a. clutclbwheelfxed' on 1905)..,4 erichy of the latter pinions; a rotelletvvheelil :f adopted to be driven by the crunk-shaft ,sxiidrr to selectively engage said-clutoh-wheels. a cordingly es shifted; an oscillating shuft.,

having fixed thereonnn arm, the latterhav-- '10SM- 'ing ir counter-sink therein; o yoke looselm l mounted on the oscillating sheft and wi .z its urms having connection with the ratchet- K wheel to shift the latter; a spring pressed pointed plug in the yoke -with its 'end extending into vthe counterfsink insad;: erm; stop mechanism -ndapted `to be gugcd und actuated by ,the rackbar in 0 7 posite directions at the correspondmgnl its stroke; nud a mechanism 1n connection.

shaftto nctunte the' latter. A;

G. ln apparatus of the classdeseribena reciprocating pump; e rack-basin connoc tion with the pump to'actuate thesame; reversible caring. engaged with the-rock ber ndapte to drive the -vsame'in o positg' directions; o stopmechanism adapt tlzxljzbg engaged and actuated in opposite direction s by the reclolnir at the comspondin ende Qi ,132% the stroke ofthe pump; o shaft vin 5o-I. segment gear Aactuated by ,the stop mec Hai-i: L nism; u 'lever lixed upon said shaft; a', second. shaft having rican's 1n connection therewith,i for coni-.rolling L said .reversible -geanng end -nel ating the same, two oscillatin having also fixed thereon a lever for actuating the same; a rod having sliding .connection wit each. of the levers andhaving also two com ression sprin s thereon bearn respectively against sai levers; and a b ook on each lever, the one adapted to obstruct the movement of the other during the transit o'f. the former lever from one of its positions to the other.

'7. In apparatus of the class described, 1n combination with a reciprocating pump having a reversible gearing in connection therewith-for actuating the same, an oscillating shaft having means in connection` therewitli for reversing said gearing and having a o a lever fixed thereon for actuating the s me; a second oscillatin shaft having a levfr fixed thereon, each o said levers having ai projecting block `extending in a common plane; a stop mechanism aving connectionl\with the pump actuating mechanism adapted to be driven in opposlte directions thereb at the corresponding ends of thestroke o the pump and having means in connection also with the latter oscillating Vshaft to actu-ate the same; a rod having sliding connection with each of said levers; and two compression springs on the rod acting respectively against said levers, the former lever being adaptedto be detained in its action by interference of said blocks until the stroke of the other lever is completed.

8. In combination with a reciprocating pump having a reversible gearing for actuating the same; a stop mechanism having contact relation with the pump to be actuated in opposite directions at the corresponding ends of the stroke of the pump; a detent mechanism having two oscillating shafts, each having in connection therewith a iixed lever, one of said shafts having means in connection Withthe stop mechanism to be actuated thereby and the other shaft having connection with the gearing adapted to reverse the same; 'a block on each of said levers .extending in a common plane; a rod having sliding connection with each of the levers; and two springs on said rod acting respectively against said levers; the block on the lever actuated by the stop mechanism being adapted 5 to enga e the vblock on the other lever and 'there y obstruct the movement of the latter lever during the transit of the former lever from one of its positions vto the other.

9. I*In combination with the reciprocating pump andthevreversible gearing for actug shafts; a stop mechanism actuated by said pump in opposite directions atl the corresponding rends of the stroke j'thereof; means in connection with-one of the oscillatin shafts for reversing said driving mechanism; and ia detent mechanism having connection re- ,shaft and h avin loose y mouu e -th spectively with said oscillatin shafts adapted to obstruct the action of t e latter oscillating shaft during the transit of the other oscillating shaft from one of its positions to the other.

10. In combination with a reciprocating pump having a reversible' gearing for actuating the same and a stop mechanism actuated in opposite directions bysaid pump at the corresponding ends of its stroke, a de, tentmechanism comprised of two oscillating shafts, one having relation with the stop mechanism to be actuated thereby, and the other having means in connection with the gearin to reverse the'same; a lever fixed on eac of said shafts; a spud carried by' each of said levers, a rod extending loosely through each of said spuds; two compression springs on the rod bearing upwardly against said spuds respectively;y nuts on said rod adapted to rest against said spuds respectively upon the opposite side thereof-to said springs; and a block xed on'each of said levers, extending in a common plane,4 the block on the lever actuated by the stop mechanism being adapted during the transit of the latter lever from one position to the other to obstruct the other block and thereby detain`.the movement of the other lever until the stroke of the former is completed:

11. In combination with a reciprocating pump, a reversible gearing having relation with the pump to actuate the same; a clutchmechanism including a ratchet-wheel for driving the reversible gearing alternately in opposite directions accordingly as the ratchet-wheel is shifted; a stop mechanism adapted to be engaged and moved in opposite directions by the pump mechanism respectively at the ends of the stroke of the pump; and a ydetent mechanism for operating the ratchet-wheel and'having driven relation with the stop mechanism.

12. In' apparatus of the class described, a pump having a cylinder; a head for the cylinder at its discharge end having a chamber therein and an opening located above the bottom of the chamber for the admission of liquid from the cylinder into said chamber and having 'also an outlet opening; a removable screen having a plug with an opening therein removably fitted into the discharge opening of the head; and a discharge pipe secured in the opening ofthe plug and having communication with the chamber through said screen. e

13. In apparatus of the class described, a reciprocating pump; a reversible d-gl's'rng4 gear for actuatingy the pump; a- Aclutch mechanism with means' in connection therewith for operating the driving gear; an o cillating shafthaving an arm fixed the the latter having 'a counter-'sink near4 outer end; a yoke loosel mounted upc a spring pressed pointedplugextendngtinto \mechanismV and the oscillating shaft for ac- 4c the" countensink of the arm; ysaid yoke havtuating the -latlter in opposite directions at n ing also connection with the c l-utcii'-mecha-vv the respective' ends of the stroke of the pump nismmtofactuate the sameyand ay stop mechyf jmechanisru.` l 1 5 anisni having operativen relation .-with the L" 17. In apparatus oi the class described,l a

umpmecliani m' and being adapted jt'o 0sreciprocatingtpumpmechanism;a reversible 45 cillateaid shaft.` i' l:gearing for actuatlng they pump mechanism; am. In iecfliu'inislnoffthe;fclassidescribed,v` ajpdstop mechanism actuated `by the pump are'ciprocating pump mecha'aiiiienrg*.av re,.-b fniechanism; an oscillatingl sha-ft having a lo ver-sible .gearing havingdriving relation ysegment geary thereon actuated` by .the sto i, with said pum mechanism; and's'topfmech-w mechanism; set screws oppbsltcly dispose 50 anism 'adapte .to be engaged :and actuated for limiting ythc movement ofthe oscillating inroppositedirections lay-the pumpmecha' 'shaftyand `a detentvmechani sm actuated by p nimrrespectively at the*endsfoifthestrokej the? oscillating shaft and having operative 15 ofthe latter andhaving'lals'o actuating ree' relation "with the gearing for reversing the lation withthe gearingotoreversethesamex Allsrtt'er.l 1'@ l, Vj f 55 .15; In apparatus of the-rjjclassdescrbed?, apparatuso'ithe/class described,` a. pump. cylindr. having@ emmberrha'dvatl, nlp having@ eylmdr s'- `1v chmbrd Ahead discharge endl; there being;y ning in tlieat their' discharge end ofthe-c luider, there 2o head Vlocated above the bott f `thexcl'iaiwrrf being an a, erture in the hea for 'the pasber therein for the passage foi 1"'ui'd.y from' sage therct rough of iluildfrom ther linder 0,0

i `the pump-cylinder into thehea'd,jt V'nto the chamber locatedabove 'the ottom v `also an outlet. aperture in the-,headzg'a-a `plu f, the chamber, said J head having valso an having a dischar e pipe .infoonnection there utlet openingtherein at its top; a plug clos- 25 with and exten ing' threthrougmfclosin ng theoutlet o enin and being removable the dischargeopening'in 'the#heatrfroxn'\tht from thepextenor t reci; a cup-shaped 65 exterior thereof; and ascreenjseeured to the' y 'screen secured at its open end to said plug,

i inner end of the plug and' beigI Y itsclos'ed end extendingwithin'the lchamber therewith. i ofthe head'toa point elow the level of the 3o 16. Inapparatus ofthe cla i` l nletaperture thereinyand adischar e pipe reciprocating pump -rnechanisin ;,L mmunicatnhrou 'h saidluga'u screen T0 'earing @or actuating the-pump ,Y thfthecham y r'in e hea u and havingka, clutch device in In testimonyvwhereoi aiiixxnyrfsigna'ture` inrpresence-of two witne.

Linnaeus E. BAKER..-

'rebein therewith for controlling the saine an 35 lating shaft; a yoke for` actuating th' device, having a. s ring pressadrelat'io s .l

the oscillating sha tthrough hichtlieyokeis 5 Witneges: actuated upon oscillation of t eshaft 'anda A; D. Hum, mechanism havingconnectionwith the pump j 31C. L. Minimum. 

